Guys, it is not difficult to fix the debt spiral if you got access to their developer tools. There are plenty of things that are just lacking QA big time and they should be accountable for that. Not legally, but morally.
I'm as much frustrated about the situation as you, and I think everyone deserves a more polished game, especially in the AI department which seems to be the biggest bottleneck.
Until all the glaring issues with the AI are fixed (which will take years upon years, if it happens at all) I have created a mod "BetterAI" which fixes plenty of those AI issues. I'm planning on expanding on it so we, as a community, can enjoy it even in 5 years time when paradox moves on and forgets us. A vanilla eu4 experience, but fixed.
steamcommunity.com
Edit: I've been informed of another similar mod to mine which apparently is even better! I didn't try it, but it looks very promising aswell
steamcommunity.com
On the one hand, I want people to complain, I want everyone to voice their opinion so paradox changes their behavior, but I know that this is just a drop in the bucket compared to the frustration that everyone endures who loves the game. I want everyone to enjoy the game when they pick it up to play, when they invest their time into it.
If you wanna enjoy the game again, I hope my mod can help you. Don't stop posting till we get some fixes, but for the time being you shouldn't have to revert to old versions or have a worse gaming experience.
Not an ad for the sake of it, but I read all those discussions and I want to keep the community alive and healthy. If you deem this as annoying, just tell me, but I think a few more people would love to know about a possible solution.
Give me feedback and tell others there's a way to enjoy the game (hopefully, it depends on your view of the mod).
If you know any other mods which fix current issues with the game, it would be nice if you could tell everyone in here. If you know how to improve the game, why not contribute to some of those mods.
And thanks so far for the community. Really welcoming guys throughout all of the discord servers.
Other mods that fix vanilla eu4 issues:
https://forum.paradoxplaza.com/forum/threads/mercs-reason-for-performance-issues-in-1-30.1402395/ which disbands unnecessary mercenary units. It's really good. (Hopefully soon available in my mod)
https://forum.paradoxplaza.com/forum/threads/mercs-reason-for-performance-issues-in-1-30.1402395/ Estate UI fix. In vanilla you can't remove some privileges since they are being hidden in the UI. This fixes it.
https://steamcommunity.com/sharedfiles/filedetails/?id=2164202838&searchtext=missions+expanded Not a fix per se, and not really vanilla, but we really should not need to pay 10€+ DLCs to get mission trees for the world. Beware, some things may be OP, but I'm sure they will enjoy your feedback.
https://steamcommunity.com/sharedfiles/filedetails/?id=1815961994&searchtext=modus+vivendi additional content in the form of more ruler personalities. I tried it, it's nicely balanced imo and gives much needed flexibility in that regard.